<template>
	<view>
      <view class="search-box">
        <uni-search-bar @confirm="search" @input="input" :radius="100" clearButton="auto" cancelButton></uni-search-bar>
      </view>
      <!-- 搜索建议列表 -->
      <view class="sugg-list" v-if="searchResults.length !== 0">
        <view class="sugg-item" v-for="(item,i) in searchResults" :key='i' @click="gotodeteil(item)">
          <view class="goods-name">{{item.goods_name}}</view>
          <uni-icons type='arrowright' size='16'></uni-icons>
        </view>
      </view>
      
      <!-- 搜索历史 -->
      <view class="history-box" v-else>
        <!-- 标题区域 -->
        <view class="history-title">
          <text>搜索历史</text>
          <uni-icons type='trash' size='17' @click='clean'></uni-icons>
        </view>
        <!-- 列表区域 -->
        <view class="history-list">
          <uni-tag :text="item" v-for="(item,i) in histories" :key="i" @click="gotogoodslist(item)"></uni-tag>
          
        </view>
      </view>
	</view>
</template>

<script>
	export default {
		data() {
			return {
				// 延时器timerId
        timer:null,
 // 搜索关键字
        kw:"",
        // 搜索结果列表
        searchResults:[],
        //搜索历史得数组
        historylist:[]
			};
		},
    onLoad(){
      this.historylist = JSON.parse(uni.getStorageSync('kw')||'[]')
    }
    ,
    methods:{
      input(e){
        // 清除对应延时器
        clearTimeout(this.timer)
        // 重新启动延时器
        this.timer = setTimeout(()=>{
          // console.log(e.value)
          this.kw = e.value
          this.getsearchlist()
        },500)
      },
     async getsearchlist(){
          if(this.kw.length === 0) {
            this.searchResults = []
            return
          }
      const {data:res} = await  uni.$http.get('/api/public/v1/goods/qsearch',{query:this.kw})
      if(res.meta.status !== 200) return uni.$showMsg()
      this.searchResults = res.message
      
      this.savesearchhistory()
      },
      gotodeteil(item){
           console.log(item.goods_id)
          uni.navigateTo({
            url:'/subpkg/goods_detail/goods_detail?goods_id' + item.goods_id
          })
    },
    // 保存历史搜索记录
    savesearchhistory(){
      // this.historylist.push(this.kw)
      const set = new Set(this.historylist)
      set.delete(this.kw)
      set.add(this.kw)
     this.historylist = Array.from(set)
     uni.setStorageSync('kw',JSON.stringify(this.histories))
    },
    clean(){
      this.historylist = []
      uni.setStorageSync('kw','[]')
    },
    gotogoodslist(kw){
      uni.navigateTo({
        url:'/subpkg/goods_list/goods_list?query='+ kw
      })
    }
	},
  computed:{
    histories(){
      return [...this.historylist].reverse()
    }
  }
 }
</script>

<style lang="scss">
.sugg-list {
  padding: 0 5px;
    
  .sugg-item{
    font-size: 12px;
    padding: 13px 0;
    border-bottom: 1px solid #efefef;
    display: flex;
    align-items: center;
    justify-content: space-between;
    .goods-name{
      //文字不允许换行
      white-space: nowrap;
      //溢出隐藏
      overflow: hidden;
      //文本溢出使用。。。
      text-overflow: ellipsis;
      margin-right: 3px;
      
    }
  }
}
.history-box {
   padding: 0 5px;
  .history-title{
    display: flex;
    justify-content: space-between;
   height: 40px;
   align-items: center;
   font-size: 13px;
   border-bottom: 1px solid #efefef;
  }
  .history-list {
    display: flex;
    flex-wrap: wrap;
    .uni-tag {
      margin-top: 5px;
      margin-right: 5px;
    }
  }
}
</style>
